package com.sky.controller.admin;

import com.sky.constant.MessageConstant;
import com.sky.result.Result;
import com.sky.service.impl.FileUploadService;
import com.sky.utils.UploadUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;


import java.io.File;
import java.io.IOException;
import java.util.UUID;

/**
 * 通用接口
 */
@RestController
@RequestMapping("/admin/common")
@Api(tags = "通用接口")
@Slf4j
public class CommonController {

    public final FileUploadService fileUploadService;

    @Autowired
    public CommonController(FileUploadService fileUploadService) {
        this.fileUploadService = fileUploadService;
    }

    @Autowired
    private UploadUtil uploadUtil;


    @GetMapping("/upload-path")
    @ApiOperation("获取文件上传路径接口")
    public String getUploadPath(){
        System.out.println(fileUploadService.getUploadPath());
        return fileUploadService.getUploadPath();
    }

    /**
     * 文件上传
     * @param file
     * @return
     */
    @PostMapping("/upload")
    @ApiOperation("文件上传")
    public Result<String> upload(MultipartFile file){
        log.info("文件上传:{}",file);

        try {
            //原始文件名
            String originalFileName = file.getOriginalFilename();
            //截取原始文件名的后缀
            String extension = getFileExtension(originalFileName);
            //构造新文件名称
            String objectName = UUID.randomUUID().toString() + extension;
            //文件的请求路径
            String filePath = uploadUtil.upload(file.getBytes(),objectName);


            return Result.success(filePath);
        }catch (IOException e){
            log.error("文件上传失败:{}",e);
        }
        return Result.error(MessageConstant.UPLOAD_FAILED);
    }

    /**
     * 获取文件扩展名
     * @param fileName
     * @return
     */
    private String getFileExtension(String fileName){
        int lastIndexOfDot = fileName.lastIndexOf(".");
        if (lastIndexOfDot == -1){
            return "";//没有扩展名
        }
        return fileName.substring(lastIndexOfDot);
    }


}



